11211210100 has 36 divisors (see below), whose sum is σ = 24564545824. Its totient is φ = 4440941280.

The previous prime is 11211210097. The next prime is 11211210139. The reversal of 11211210100 is 101211211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 533934 + ... + 554533.

Almost surely, 2^11211210100 is an apocalyptic number.

11211210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211210100 is an abundant number, since it is smaller than the sum of its proper divisors (13353335724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211210100 is a wasteful number, since it uses less digits than its factorization.

11211210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088584 (or 1088577 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11211210100 its reverse (101211211), we get a palindrome (11312421311).

The spelling of 11211210100 in words is "eleven billion, two hundred eleven million, two hundred ten thousand, one hundred".